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Finding the Fourth Proportional to 266,198.60, 399,200.70 and 88,711.40

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Solution

The fourth proportional to 266,198.60, 399,200.70 and 88,711.40 is: 133,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,198.60 : 399,200.70 = 88,711.40 : x
  2. Step 2: Convert to fraction form
    266,198.60/399,200.70 = 88,711.40/x
  3. Step 3: Cross multiply
    266,198.60x = 399,200.70 × 88,711.40
  4. Step 4: Simplify right side
    266,198.60x = 35,413,652,977.98
  5. Step 5: Solve for x
    x = 35,413,652,977.98/266,198.60
  6. Step 6: Final answer
    x = 133,034.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.